A body starts from rest and moves with uniform acceleration of 6ms-2. What distance does it cover in the third seconds
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1992
A boy sits in a train moving with uniform speed on a straight track. If from his outstretched palm he gently tosses his coin upwards, the coin will fall
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1992
Which of the following affects the period of a simple pendulum? i. mass of the pendulum bob. ii. length of the pendulum. iii. acceleration due to gravity.
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1992
What is the least possible error in using a rule graduated in centimeters?
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1992
If a plastic sphere floats in water (density = 1000kgm3) with 0.5 of its volume submerged, and floats in oil with 0.4 of its volume submerged the density of the oil is
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1992
In an experiment to determine Young's Modulus for a wire, several loads are attached to the wire and the corresponding extension measured. The tensile stress in each case depends on the
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1992
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
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1992
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
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1992
A stone, Q is thrown with velocity U at an angle of 75o to the horizontal. Another stone R is thrown with the same velocity U but with an angle of 15o to the horizontal. The ranges covered by the stones will be
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1992
How much heat is absorbed when a block of copper of mass 0.05kg and specific heat capacity 390Jkg-1K-1 is heated from 20oC to 70oC?
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1992
At constant pressure, the density of a fixed mass of gas is
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1992
One of the most important applications of bi-metallic strip is found in the construction of
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1992
A bridge made of steel is 600m long. What is the daily variation in its length if the night-time and daytime temperatures are 10oC and 35oC respectively. The linear expansivity of steel is 0.000012C-1
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1992
A platinum resistance thermometer wire has a resistance of 5 ohms at 0oC and 5.5 ohms at 100oC. Calculate the temperature of the wire when the resistance is 5.2 ohms
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1992
A note is the octave of another note if it has
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1992
Which of the following characteristics of a wave is used in the measurement of the depth of the sea?
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1992
The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?
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1992
The space between the double glass walls of a thermos flask is evacuated space are silvered. The residual source of heat loss takes place by
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1992
A block of ice floats on water inside a container. If the block of ice gets completely melted, the level of water in the container will
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1992
Which of the following statements is CORRECT about a long-sighted boy who does not put on glasses?